Foxconn is said to have successfully completed durability testing for two different Apple iPhone foldable prototypes. According to Taiwanese supply chain rag, Money UDN, the two prototypes are said to resemble the Samsung Galaxy Z Fold and Galaxy Z Flip respectively in design approach.
https://www.notebookcheck.net/Two-distinct-foldable-iPhone-prototypes-pass-Foxconn-durability-testing.512850.0.html